I have a cheapie Chinese cyclone and attached that to a plastic barrel - yep, it collapsed. I now have a box made from OSB with all the joints sealed/caulked and the cyclone on a cased lid with some draught excluder seal - held down with toggle clips. Connected to a home-brewed ducting set-up made from 40mm waste pipe and some home-made blast-gates - powered by a Henry that’s switched with a remote control socket. It works!
